Conceptual Knowledge is knowledge of classifications, principles, generalizations, theories, models, or structures pertinent to a particular disciplinary area. (Bloom's Taxonomy)
  • Knowledge of classifications and categories
  • Knowledge of principles and generalizations
  • Knowledge of theories, models, and structures

Procedural Knowledge refers to a sequence of steps by which frequently encountered problems may be solved.

Conceptual knowledge is an understanding of meaning. Students must understand the "why" of mathematical concept.

Procedural vs conceptual knowledge:
http://teachingmathliteracy.weebly.com/conceptual-vs-procedural-knowledge.html